<template>
  <div>
    <!--面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区-->
    <el-card>
      <!--搜索与添加区域-->
      <el-row :gutter="10">
        <el-col :span="18">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!--用户列表区域-->
      <el-table :data="userList" style="width: 100%" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="username" label="姓名"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">

            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!--修改按钮-->
            <el-button type="primary" icon="el-icon-edit" circle size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!--删除按钮-->
            <el-button type="danger" icon="el-icon-delete" circle size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!--分配角色按钮-->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
            <el-button type="warning" icon="el-icon-setting" circle size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!--分页区域-->
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1, 2, 5, 10]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </el-card>
    <!--添加用户的对话框-->
    <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed">
      <!--内容主体区域-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input type="password" v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!--修改用户的对话框-->
    <el-dialog
        title="修改用户信息"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editFormClosed">
      <!--内容主体区域-->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
    </el-dialog>

<!--分配角色对话框-->
  <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed">
    <div>
      <p>当前的用户：{{ userInfo.username }}</p>
      <p>当前的角色：{{ userInfo.role_name }}</p>
      <p>分配新角色：</p>
      <el-select v-model="selectedRoleId" placeholder="请选择">
        <el-option
            v-for="item in rolesList"
            :key="item.id"
            :label="item.roleName"
            :value="item.id">
        </el-option>
      </el-select>
    </div>
    <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
  </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Users",
  data() {
    //验证邮箱的规则
    var checkEmail = (rule,value,callback) => {
      //验证邮箱的正则表达式
      const regEmail = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
      if(regEmail.test(value)){
        //合法邮箱
        return callback();
      }else{
        callback(new Error('请输入合法的邮箱'));
      }
    }
    //验证手机号码的规则
    var checkMobile = (rule,value,callback) => {
      const regMobile = /^(13[0-9]|14[5|7]|15[0|1|2|3|4|5|6|7|8|9]|18[0|1|2|3|5|6|7|8|9])\d{8}$/;
      if(regMobile.test(value)){
        //合法的手机号码
        return callback();
      }else{
        callback(new Error('请输入合法的手机号码'));
      }
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: '',
        pagenum: 1, // 当前的页数
        pagesize: 2 //当前每页显示多少条数据
      },
      userList: [],
      total: 0, // 总数据条数
      addDialogVisible: false, //控制添加用户对话框的显示和隐藏
      //添加用户的数据对象
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: '',
      },
      //添加用户的表单验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur'}
        ]
      },
      editDialogVisible: false, //控制修改用户对话框的显示与隐藏
      //查询到的用户信息对象
      editForm: {},
      //修改用户的表单验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur'}
        ]
      },
      //控制分配角色对话框的显示/隐藏
      setRoleDialogVisible: false,
      //需要被分配角色的用户信息
      userInfo: {},
      //所有角色的数据列表
      rolesList: [],
      //选中的角色对应的Id
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const {data : res} = await this.$http.get('users',{params: this.queryInfo});
      if(res.meta.status !== 200) return this.$message.error(res.meta.msg); // 数据获取失败
      this.userList = res.data.users;
      this.total = res.data.total;
      // console.log(res);
    },
    //监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    //监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    async userStateChanged(userinfo) {
      const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      // console.log(res);
      if (res.meta.status !== 200) { //更新用户状态失败，于是将用户状态取反，保证页面上的状态不变
        userinfo.mg_state = !userinfo.state;
        return this.$message.error('更新用户状态失败');
      }
      this.$message.success('更新用户状态成功');
    },
    //监听添加用户对话框的关闭
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    //点击'确定'按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if(!valid) return; //校验失败
        //可以发起添加用户的网络请求
        const { data : res} = await this.$http.post('users',this.addForm);
        if(res.meta.status !== 201) return this.$message.error('添加用户失败');
        this.$message.success('添加用户成功');
        //隐藏添加用户的对话框
        this.addDialogVisible = false;
        //重新获取用户列表数据
        this.getUserList();
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id);
      const { data : res } = await this.$http.get('users/' + id);
      if(res.meta.status !== 200) return this.$message.error('查询用户信息失败');
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    //监听 修改用户对话框 的关闭
    editFormClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //点击'确定'按钮，修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if(!valid) return; //校验失败
        //可以发起修改用户的网络请求
        const { data : res } = await this.$http.put('users/' + this.editForm.id,
            {email: this.editForm.email,mobile: this.editForm.mobile});
        if(res.meta.status !== 200) return this.$message.error('用户信息更新失败');
        this.$message.success('用户信息更新成功');
        //隐藏修改用户信息的对话框
        this.editDialogVisible = false;
        //重新获取用户列表
        this.getUserList();
      })
    },
    //根据ID删除对应的用户信息
    async removeUserById(id) {
      //弹框询问用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err);
      //如果用户确认删除，则返回值为字符串confirm
      //如果用户取消删除，则返回值为字符串cancel
      if(confirmResult === 'cancel'){
        return this.$message.info('已取消删除');
      }
      const { data : res} = await this.$http.delete('users/'+id);
      if(res.meta.status !== 200) return this.$message.error('删除用户失败');
      this.$message.success('删除用户成功');
      //重新获取用户列表
      this.getUserList();
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo;
      this.setRoleDialogVisible = true;
      //在展示对话框之前，获取所有的角色列表
      const { data : res } = await this.$http.get('roles');
      if(res.meta.status !== 200) return this.$message.error('获取角色列表失败');
      this.rolesList = res.data;
    },
    //点击'确定'按钮，分配角色
    async saveRoleInfo() {
      if(!this.selectedRoleId) { //在分配角色对话框中没有
        return this.$message.error('请选择要分配的角色');
      }
      const { data : res } = await this.$http.put(`users/${this.userInfo.id}/role`,{ rid : this.selectedRoleId})
      if(res.meta.status !== 200) return this.$message.error('设置角色失败');
      this.$message.success('设置角色成功');
      this.getUserList();//更新用户列表
      this.setRoleDialogVisible = false; //分配角色对话框关闭
    },
    //监听分配角色对话框的关闭
    setRoleDialogClosed() {
      this.selectedRoleId = '';
    }
  }
}
</script>

<style lang="less" scoped>
  .el-table {
    margin-top: 15px;
    font-size: 12px;
  }

</style>
